The present disclosure provides a preparation method of a laminated cell comprising: providing a laminated pack: the laminated pack comprises n laminated groups, the each laminated group comprises m electrode plate assemblies, a spacer is provided between the adjacent laminated groups, the electrode
The present disclosure provides a preparation method of a laminated cell comprising: providing a laminated pack: the laminated pack comprises n laminated groups, the each laminated group comprises m electrode plate assemblies, a spacer is provided between the adjacent laminated groups, the electrode plate assemblies of all the laminated groups of the laminated pack and the spacers between the adjacent laminated groups are orderly positioned in a Z-shaped separator in a laminating direction, an upper part and a lower part of the separator adjacent to the each spacer are separated by the each spacer; forming a laminated cell: the separator is broken at an end of the each spacer positioned in the separator to allow the each spacer and the each laminated group to separate from each other, so as to obtain the corresponding laminated cell formed by the electrode plate assembly of the each laminated group and the corresponding separator.
대표청구항▼
1. A preparation method of a laminated cell, comprising steps of: providing a laminated pack: the laminated pack comprising n laminated groups, each laminated group comprising m electrode plate assemblies and the numbers of the electrode plate assemblies of all the n laminated groups being the same
1. A preparation method of a laminated cell, comprising steps of: providing a laminated pack: the laminated pack comprising n laminated groups, each laminated group comprising m electrode plate assemblies and the numbers of the electrode plate assemblies of all the n laminated groups being the same or different, and n≧2, m≧2, a spacer being provided between each two adjacent laminated groups, the electrode plate assemblies of all the n laminated groups of the laminated pack and the spacers between the two adjacent laminated groups being orderly positioned in a Z-folding type separator in a laminating direction, an upper part and a lower part of the separator adjacent to each spacer being separated by the spacer, each electrode plate assembly being one positive electrode plate provided with a positive electrode tab or one negative electrode plate provided with a negative electrode tab; andforming a laminated cell: the separator being broken at an end of each spacer positioned in the separator to allow the spacer and each two adjacent laminated groups to separate from each other, so as to obtain a corresponding laminated cell formed by the electrode plate assemblies of the laminated group and a corresponding part of the separator; the each laminated cell comprising at least one positive electrode plate provided with a positive electrode tab and at least one negative electrode plate provided with a negative electrode tab the positive electrode tab and the negative electrode tab of each laminated cell being provided on the same side or different sides in a direction perpendicular to the laminating direction of the laminated pack and a folding direction of the Z-folding type separator. 2. The preparation method of the laminated cell according to claim 1, wherein in the step of providing the laminated pack, a manner for providing the laminated pack is as follows: providing a first laminated group: putting a first electrode plate assembly of the first laminated group on an end portion of the separator, folding the separator and attaching the separator to the first electrode plate assembly of the first laminated group, then putting a second electrode plate assembly of the first laminated group on the folded separator, folding the separator again and attaching the separator to the second electrode plate assembly of the first laminated group, such repeated, until the m-th electrode plate assembly is put on the separator and the separator is folded;putting the spacer on the separator and folding the separator;providing a second laminated group: putting a first electrode plate assembly of the second laminated group on the separator folded on the spacer, folding the separator and attaching the separator to the first electrode plate assembly of the second laminated group, then putting a second electrode plate assembly of the second laminated group on the folded separator, folding the separator again and attaching the separator to the second electrode plate assembly of the second laminated group, until the m-th electrode plate assembly of the second laminated group is put on the separator and the separator is folded;putting another spacer on the separator and folding the separator; andsuch repeated, until the n-th laminated group is provided. 3. The preparation method of the laminated cell according to claim 1, wherein in the step of providing the laminated pack, a manner for providing the laminated pack is as follows: supporting the separator to form a Z-folding type separator using a plurality of rollers;inserting the spacers and the electrode plate assemblies of the each laminated group into the Z-folding type separator, so as to allow the electrode plate assemblies of all the laminated groups of the laminated pack and the spacers between the adjacent laminated groups orderly positioned in the Z-folding type separator; andpulling the plurality of rollers out. 4. The preparation method of the laminated cell according to claim 1, wherein at least a surface of the separator is provided with an adhesive coating. 5. The preparation method of the laminated cell according to claim 1, wherein a stiffness of a material of the spacer is 50 GPa˜300 GPa. 6. The preparation method of the laminated cell according to claim 1, wherein a length of the each spacer is not less than a width of the separator, a width of the each spacer is not less than the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below. 7. The preparation method of the laminated cell according to claim 4, wherein a length of the each spacer is not less than a width of the separator, a width of the each spacer is not less than the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below. 8. The preparation method of the laminated cell according to claim 6, wherein in the step of forming the laminated cell, when the width of the each spacer is greater than the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below, the separator is broken by cutting and/or hot-breaking at the end of the each spacer positioned in the separator;when the width of the each spacer is equal to the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below, the separator is broken by cutting at the end of the each spacer positioned in the separator. 9. The preparation method of the laminated cell according to claim 7, wherein in the step of forming the laminated cell, when the width of the each spacer is greater than the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below, the separator is broken by cutting and/or hot-breaking at the end of the each spacer positioned in the separator;when the width of the each spacer is equal to the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below, the separator is broken by cutting at the end of the each spacer positioned in the separator. 10. The preparation method of the laminated cell according to claim 8, wherein in the step of forming the laminated cell, when the width of the each spacer is greater than the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below and the each spacer protrudes for the same size from the electrode plate assembly having the maximum width in the two adjacent laminated groups located above and below at a corresponding side of the laminated pack along the folding direction, the separator is broken by hot-breaking at the ends of all the spacers positioned in the separator at the corresponding side along the folding direction at a time. 11. The preparation method of the laminated cell according to claim 9, wherein in the step of forming the laminated cell, when the width of the each spacer is greater than the maximum width of the electrode plate assemblies of the two adjacent laminated groups located above and below and the each spacer protrudes for the same size from the electrode plate assembly having the maximum width in the two adjacent laminated groups located above and below at a corresponding side of the laminated pack along the folding direction, the separator is broken by hot-breaking at the ends of all the spacers positioned in the separator at the corresponding side along the folding direction at a time. 12. The preparation method of the laminated cell according to claim 1, further comprising a step between the step of providing the laminated pack and the step of forming the laminated cell: pressing the laminated pack: pressing the laminated pack along the laminating direction using a pressing mechanism, so as to allow the electrode plate assemblies of the each laminated group of the laminated pack and the corresponding separator to be bonded together, and the each spacer and the adjacent separator are not bonded together. 13. The preparation method of the laminated cell according to claim 4, further comprising a step between the step of providing the laminated pack and the step of forming the laminated cell: pressing the laminated pack: pressing the laminated pack along the laminating direction using a pressing mechanism, so as to allow the electrode plate assemblies of the each laminated group of the laminated pack and the corresponding separator to be bonded together, and the each spacer and the adjacent separator are not bonded together. 14. The preparation method of the laminated cell according to claim 12, wherein in the step of pressing the laminated pack, the pressing mechanism is a hot press mechanism. 15. The preparation method of the laminated cell according to claim 13, wherein in the step of pressing the laminated pack, the pressing mechanism is a hot press mechanism. 16. The preparation method of the laminated cell according to claim 1, further comprising a step after the step of forming the laminated cell: performing hot pressing on the obtained laminated cell using a hot press mechanism.
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